Purple Shamrock (Oxalis Triangularis)

Buy Purple Shamrock Plant (Oxalis triangularis) – Vibrant Indoor Foliage

Oxalis triangularis, commonly called Purple Shamrock or False Shamrock, enchants with its three-lobed, violet-hued leaves and delicate blush-pink flowers. Perfect for windowsills, tabletop displays, or shaded patios, this perennial adds color, charm, and a touch of luck to any indoor or outdoor space.

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Plant Profile

• Botanical Name: Oxalis triangularis
• Common Names: Purple Shamrock, False Shamrock, Lucky Shamrock
• Family: Oxalidaceae
• Native Range: Brazil, Bolivia, Argentina, Paraguay
• Toxicity: Mildly toxic to pets if ingested

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Oxalis triangularis Care & Cultivation

• Light: Bright, indirect light maximizes leaf color; tolerates morning sun or afternoon shade.
• Water: Keep soil evenly moist during active growth; allow top 1″ to dry before watering and reduce in winter dormancy.
• Soil: Well-draining, slightly acidic mix (pH 5.5–6.5) enriched with organic matter.
• Humidity: 40–60% RH; average home humidity is sufficient.
• Temperature: 60–75 °F (15–24 °C); protect from drafts and temps below 55 °F.
• Fertilizer: Feed monthly with a balanced water-soluble fertilizer (10-10-10) in spring and summer.
• Propagation: Divide bulbs or corms at planting; offsets form readily.
• Pests & Problems: Monitor for aphids or spider mites and treat early with insecticidal soap.

Read our complete Oxalis Care Guide

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Why You’ll Love Purple Shamrock

Beyond its dramatic foliage, the Purple Shamrock performs a graceful nightly “dance” (nyctinasty), folding its leaves at dusk and reopening at dawn. Its folklore associations with luck and renewal make it an enchanting gift or focal point.

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Fun Fact

Each triangular leaflet tracks ambient light—an evolutionary adaptation to maximize photosynthesis in understory habitats.

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